import React from 'react';
import { CSSTransition } from 'react-transition-group';
import { connect } from 'react-redux';
import { Link } from 'react-router-dom';
import { actionCreators } from './store';
import { actionCreators as loginActionCreators } from './store';
import {
  HeaderWrapper,
  NavLogo,
  Nav,
  NavItem,
  NavSearch,
  Addition,
  Button,
  SearchWrapper,
  SearchInfo,
  SearchInfoTitle,
  SearchInfoSwitch,
  SearchInfoItem,
  SearchInfoList
} from './style';

class Header extends React.Component {

  getListArea() {
    const { focused, list, page, totalPage, mouseIn, handleMouseEnter, handleMouseLeave, handleChangePage } = this.props;
    const newList = list.toJS();
    const pageList = [];

    if (newList.length) {
      for (let i = (page - 1) * 10; i < page * 10; i++) {
        pageList.push(
          <SearchInfoItem key={newList[i]}>{newList[i]}</SearchInfoItem>
        )
      }
    }

    if (focused || mouseIn) {
      return (
        <SearchInfo
          onMouseEnter={handleMouseEnter}
          onMouseLeave={handleMouseLeave}
        >
          <SearchInfoTitle>
            热门搜索
            <SearchInfoSwitch
              onClick={() => handleChangePage(page, totalPage, this.spinIcon)}
            >
              <i ref={(icon) => { this.spinIcon = icon }} className="iconfont spin">&#xe851;</i>
              换一批
            </SearchInfoSwitch>
          </SearchInfoTitle>
          <SearchInfoList>
            {pageList}
          </SearchInfoList>
        </SearchInfo>
      )
    } else {
      return null;
    }
  }

  render() {
    const { focused, list, changeInputFocus, changeInputBlur, login, logout } = this.props;
    return (
      <HeaderWrapper>
        <Link to='/'>
          <NavLogo />
        </Link>
        <Nav>
          <NavItem className='left active' >首页</NavItem>
          <NavItem className='left'>下载App</NavItem>
          {
            login ?
              <NavItem onClick={logout} className='right'>退出</NavItem> :
              <Link to='/login'><NavItem className='right'>登陆</NavItem></Link>
          }
          <NavItem className='right'>
            <i className="iconfont">&#xe636;</i>
          </NavItem>
          <SearchWrapper>
            <CSSTransition
              in={focused}
              timeout={300}
              classNames="slide"
            >
              <NavSearch
                className={focused ? 'focused' : ''}
                onFocus={() => changeInputFocus(list)}
                onBlur={changeInputBlur}
              />
            </CSSTransition>
            <i className={focused ? 'focused iconfont zoom' : 'iconfont zoom'}>&#xe62b;</i>
            {this.getListArea()}
          </SearchWrapper>
          <Addition>
            <Button className='write'>
              <i className="iconfont">&#xe673;</i>写文章
          </Button>
            <Button className='reg'>注册</Button>
          </Addition>
        </Nav>
      </HeaderWrapper>
    )
  }
}

const mapStateToProps = (state) => {
  return {
    focused: state.getIn(['header', 'focused']),
    list: state.getIn(['header', 'list']),
    page: state.getIn(['header', 'page']),
    totalPage: state.getIn(['header', 'totalPage']),
    mouseIn: state.getIn(['header', 'mouseIn']),
    login: state.getIn(['login', 'login'])
  }
}
const mapDispatchToProps = (dispatch) => {
  return {
    changeInputFocus(list) {
      (list.size === 0) && dispatch(actionCreators.getList());
      dispatch(actionCreators.focusAction());
    },
    changeInputBlur() {
      dispatch(actionCreators.blurAction());
    },
    handleMouseEnter() {
      dispatch(actionCreators.mouseEnter());
    },
    handleMouseLeave() {
      dispatch(actionCreators.mouseLeave());
    },
    handleChangePage(page, totalPage, spin) {
      let originAngle = spin.style.transform.replace(/[^0-9]/ig, '');
      if (originAngle) {
        originAngle = parseInt(originAngle, 10);
      } else {
        originAngle = 0;
      }
      spin.style.transform = 'rotate(' + (originAngle + 360) + 'deg)';

      if (page < totalPage) {
        dispatch(actionCreators.changePage(page + 1));
      } else {
        dispatch(actionCreators.changePage(1));
      }
    },
    logout() {
			dispatch(loginActionCreators.logout())
		}
  }
}
export default connect(mapStateToProps, mapDispatchToProps)(Header);